loop0: detected capacity change from 0 to 32768 ================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:2247:2 index 785786880 is out of range for type 's64[128]' (aka 'long long[128]') CPU: 0 PID: 19223 Comm: syz-executor.0 Not tainted 6.5.0-rc3-syzkaller-00123-g57012c57536f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:217 [inline] __ubsan_handle_out_of_bounds+0x11c/0x150 lib/ubsan.c:348 dbAllocBits+0x961/0x990 fs/jfs/jfs_dmap.c:2247 dbAllocDmap fs/jfs/jfs_dmap.c:2024 [inline] dbAllocNear+0x262/0x390 fs/jfs/jfs_dmap.c:1250 dbAlloc+0xa23/0xca0 fs/jfs/jfs_dmap.c:835 diNewExt+0xae0/0x4000 fs/jfs/jfs_imap.c:2251 diAllocExt fs/jfs/jfs_imap.c:1945 [inline] diAllocAG+0xbe8/0x1e50 fs/jfs/jfs_imap.c:1662 diAlloc+0x3e1/0x1720 fs/jfs/jfs_imap.c:1583 ialloc+0x8f/0x980 fs/jfs/jfs_inode.c:56 jfs_mkdir+0x1c5/0xbb0 fs/jfs/namei.c:225 vfs_mkdir+0x29d/0x450 fs/namei.c:4117 do_mkdirat+0x264/0x520 fs/namei.c:4140 __do_sys_mkdir fs/namei.c:4160 [inline] __se_sys_mkdir fs/namei.c:4158 [inline] __x64_sys_mkdir+0x6e/0x80 fs/namei.c:4158 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f857587cb29 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f85765dd0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007f857599bf80 RCX: 00007f857587cb29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00007f85758c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f857599bf80 R15: 00007fff16a82b78 ================================================================================